1 / 13

Developing a Class-D Garage Band Amplifier: Design, Efficiency, and Customization

This project aims to create an efficient Class-D amplifier for garage bands, delivering over 100W RMS while maintaining high audio quality at a low cost. It utilizes an FPGA for audio processing and has an innovative PWM H-bridge output stage. Key goals include designing user interfaces, integrating digital signal processing, and constructing a protective enclosure for components. This open-source design allows for customization and enhancements, making it suitable for various audio applications. The project will adhere to a defined budget and timeline to ensure successful implementation.

brennan-wilson
Télécharger la présentation

Developing a Class-D Garage Band Amplifier: Design, Efficiency, and Customization

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Class-D Garage Band Amplifier Team: Aaron Danielson, Robert Mann, Randall Newcomb, Scott Russell Sponsor: Nigel Thompson

  2. Overview • The Purpose of the Class-D Garage Band Amplifier • Requirements and Stretch Goals • System Concept • System Block Diagram • Sampling and Bitrate Constraints • Task Breakdown • Budget • Project Schedule

  3. Purpose • Class D Amplifier Power Efficiency • Price Point • Open Source • Customizability

  4. Requirements • An amplifier output will be driven by an FPGA • The output stage will be a PWM H-bridge amplifier • High quality audio • Low cost • High efficiency • The power supply will be efficient and low cost • The amplifier will output more than 100W RMS • … Stretch Goals • An enclosure will be constructed to house the amplifier, FPGA and speaker • A more power amplifier will be implemented

  5. System Concept Images from Google Image

  6. System Block Diagram

  7. Description of Major Tasks • Design a Top Level Testbench • Contains all the key modules that connect the DSP and PWM. • Implement microprocessor. • Digital Signal Processor • Design 2 filters – one each for bass & treble. • Interface with LCD & rotary dial for user input. • H-Bridge Controller • Design code to control H-bridge IC. • Integrate H-Bridge into FPGA clocking and control. • Amplifier • Design an H-bridge. • Implement and test the amplifier • Speaker Enclosure • Build the box • Shield the box for RF radiation • Design bandpass filters for the selected speaker

  8. Bitrate & Sample Rate Comparison – CD Quality

  9. Bitrate & Sample Rate Comparison – Low Sample Rate

  10. Bitrate & Sample Rate Comparison – Low Bit Depth

  11. Bitrate & Sample Rate Comparison – A Good Compromise

  12. Budget

  13. Project Schedule

More Related